I mean if they're gonna give money without demanding anything I'm sure no complaints from the devs.
Shopify or an exec there might find some value in avoiding Google owning the web, could maybe bring goodwill for the company, or they could just be looking for a write off.
I'm curious what issue you see with that? It seems like the project is only accepting unrestricted donations, but is there something suspicious about shopify that makes it's involvement concerning (I don't know much about them)?